Frank trebau



(No Model.)

P. TREBAU.

SELF CLBANSING FILTER.

No. 387,607. Patented Aug. '7, 1888.

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UNITED STATES `PATENT OFFICE.

FRANK TRICIZAII, OF S'l. LOUIS, MISSOURI, ASSIONOR OF I`\VO'IIIIRI)` ril() RUDOLPH S'lllOlIlC t AND (iLFrliIFrNS FISOIIRR, 'ROTH OF SA MF. lLAflG.

SELF-CLEANSING FILTER.

SPECIFICATION forming part of Letters Patent No. 387,607, dated August 7, 1888.

Application filed December il, 15%.*7.

To all whom z' may concern:

Be it known that I, FRANK TREUAU, of the city of St. Louis, inthe State of Missouri, have invented a certain new and useful Improvement in Self-Cleansing Filters, ofwhich the following is a full, clear, and exact description, reference being had to the accompanying d ia\\'ings,for|u ing part of this specification.

This invention is an improvement on my filter for which Letters Patent No. 368,629 were granted to me August 251, V1.887, my present iuvention having a novel device for stirring the filtering materiahwith other novel details, also set forth in the claim.

Figure I is a front elevation of the filter. Fig. II is a vertical section at VII II, Fig. I. Fig. III is a horizontal section at III III, Fig. II. Fig. VIV is an enlarged section of one of the three-way cocks at IV IV, Fig. I.

1 is an inverted cylinder havinga piston, 2, whose rod 3 is tubular and is open through the piston so as to communicate with the chamber 4 above the piston. Ihe tubular rod or tube Il extends through a stuffing-box, 5, in the eX- teusion (i of the cylinder-head. 'lhe cylinder is shown with brackets 7, by which it maybe attached to a wall or upright; but it may be supported on a suitable frame.

S is the bottom of the chamber 9,containing the filtering material, which may very properly be composed of sponge cut into small pieces; but I wish it understood that I do not confine myself to any particular material for the purpose of filtering.

The tubular rod Il passes through an orifice, 10, ofv larger diameter in the bottom plate or board, S, the filtered liquid passing through the annular space between the rod or tube 3 and the plate S. The piston has orifices 1l, through which the liquid passes.

12 is a pipe, which may be putin connection with a hydrant or with any other supply of liquid to be filtered.

13 is a three-way cock, by which the pipe 12 may be closed, or by which it may be put in connection with either of the hose-pipes 14 or 15. The hose 14 is in connection with the lower end of the tube 3, so that liquid may be made to flow from the pipe 12 through the pipe 1l and tube 3 into the chamber 4, from Serial No. Jfsit (No model.)

which it passes through the filtering` nuiterial in chamber 9.

16 is a three-way cock, by which the connection between the pipe 1l and tube 3 may be closed, or by which either the pipe or tube may be thrown in connection with a dischargespout, 1T.

The filtered liquid passes from the chamber 9 through the orifice 10 into a ehamber,18, in the extension 6,frorn which chamber the liquid enters a pipe, 19, an d ordinarily passes th rough a three-way cock, 20, to the discharge-spout 2l. The cock 20 is constructed so that it may be used to close the pipe 19,or to put it in connection with ille dischargespout 21.(as before meutioned,) or with thc hose 15. The pistou has pins 22 extending down into the chamber 9, and the bottom S has pins 22E extending up into this chamber 9, so that when the piston is turned the filtering material is stirred by the pins. This is done when the filler is being washed out. The piston is turned by means of a handle, 24, extending from the tube 3, (which forms the piston-rod.)

25 is a lever fulcrumed at 26, alul having a lyoke, 27, through which the tube. 3 passes. Ihe yoke is slotted at 2S to receive studs 29, projecting from the tube, so that by lifting or lowering the end of the lever the piston may be raised and lowered. rlhe slot is made long enough to allow the piston to be turned backward and forward sufficiently for the stirring action of the pins upon the filtering material. The flexible pipes 11 and 1T allow the de scribed vertical aud reciprocating movements of the piston and tube 3.

30 is a set-screw in the collar ill, whose end bears against the tubular rod 3 and locks the collar to the rod.

The bottom plate, S, has orifices 32 for the passage of the filtered liquid downward and for the ascent of' clear liquid in washing the filtering material. The filtering material does not come in contact with the piston or the bottom plate, owing to the interposition of sheets 33 and 34 of wire fabric. The sheet 33 is in Contact with the under side of the piston; but the sheet 3Jt is kept from contact with the bottom plate, S, by radial slats 35, which are laid on the bottom plate. lhese slats insure the free passage of thc liquid to and from the orifices and 32.

ln ordinary use the pipe 12 is in connection with the liquid to be filtered, which must be under at least sul'ficicnt pressure to carry it into the chamber L1. 'l`he cock 153 is in position to connect the pipe 12 with hose 14, and the cock 1G in position to connect hose 14 with tube Il, and the cock 2() in position to connect the pipe 19 with the discharge2l. lheliquid flows from pipe 12 through hose 14 and tube 3 into chamber 4,f'roni which it passes through orifices 11 ofthe piston into the filtering-chamber f), from thatI through the orifice 10 into the chamber 18, and from thence through the pipe 1t) to the discharge-spout 2l, which may t be coupled to a pipe, and the filtered liquid carried where desired. This course ot' the liquid is indicated by arrows.

To cleanse the filter, the pipe 12, if not al ready in connection with the hydrant, is put in connection therewith or with some other source of clean water. The cock 1S is turned so as to connect the pipe 12 with the hose 15, the cock is turned so as to connect the hose 15 with thtA pipel lit, and thc cock lt is turned so as to connect the tnbe willi the dischargespout 17. The course of the water will now be through hose 15, pipe 19, chamber 18, and orifice l0 into the filtering-chamber 9, through which it will pass upward through orifices 1l into the chamber 4t, and from chamber it down the tube 3 to the discharge 17. Wvhile the water is passing through the lteringschamber the piston may be raised and lowered by the lever and given rotary reciprocation by the handle 21, so as to agitato the filtering ma` terial and discharge the objectionable matters collected from the filtered liquid.

I claim as my invention The combination, in a filter', of a piston ca pablo of rotary rcoiprocation,forming the top ofthe filtering-chambcr, and armed with pins projecting into the filtering material, and the bottom of the filterilig-chamber having` pins projecting into the chamber, substantially as sct forth.

FRANK TREIA U.

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